# !/usr/bin/env python3
# -*- coding:utf-8 -*-
# Auther : Liang_lz
# Date : 2023/7/27

class StringUtil:
    @staticmethod
    def clean_str(s: str) -> str | None:
        if s is not None:
            s_trimmed = s.strip()
            if len(s_trimmed) > 0:
                return s_trimmed

            return None


if __name__ == '__main__':
    pass
